Strip-pulling device for machines for making boiler-retarders



M. C. HUTCHINSON. STRIP PULLING DEVICE EUR MACHINES FOR MAKING BOILEIIREIAIIDERS.

APPLICATION FILED OCT. 7| lgl. l

Patented Mar. 9, 1920.

2 SHEETS-SHEETI uw E M. C. HUTCHINSON.

STRIP PULLING DEVICE FOR MACHINES FOR MAKINGBOILER RETARDEH'S.APPLlATloN FILED ocT. 7. 191e.

1,333,254. Patented Mar. 9,1920.

2 SHEETS-SHEET z.

AllllllllllmE l 2 ATTORNEYS Q ma yg@ L r .UNITED `STATES 'PATENTonirica.

Moncton o; iiu'icniivsoiv, oF'wooDBURY, New JERSEY, iissieivoa orONE-Hamme LEQN G. Bneiwan'rnn, or iunacnnnrvinnn, New Jirnsum inconnection with the j STRIP-Pomme -nnvicn ron'iancniivns FQRYMAKINGioiLER-iinfrAnimas.V

Be it known that I, Mon'roN CfI-Iu'ioHiN- soN, a citizen of the UnitedStates, residing at Woodbury, in the county of Gloucester,

, Stateof- New Jersey, haveini'fentedgal Inew and useful Strip-PullingDevice for-.Ma-

chines for` Making Boiler-Betarders, of

which the following is a specification.v t

In a patentgranted me on April 23rd, 1918, t No. 1,268,896, I `haveshown and broadly claimed a novel construction of a. machine forexpeditiously` manufacturing thin twisted strips ofvmetal, or boilerretarders, which-.are inserted in the flues of boilers `for the purpose:of retarding the progress of the products of combustion therethrough. fy K kIt yis necessary and desirable'in conjunction with machines ofthischaracter to em- .ploy suitable mechanism capable of. exerting a pullupon the strips in orfder torpull or draw them through theretardermachine, of my vpatent aforesaid, and infmy present invention, I haveshown forms-of mecha- .nism,fwhich are especially `adapted for usemachine of mypatent aforesaid.

In carrying out my invention, I employ a feed screw rotatably mounted insuitable bearings vand actuated through suitable `gearing by anelectric, pneumatic or' otherr prime motor, .provision being kmade fortransforming the highspeed of themotor to the desiredrrelativelylowspeed of rotation of the feed screw, the latter beiiigxeiigaged ordisengaged at will with a split-nut mounted on Va cross-header carriage`which latter carriesl a manually operated device for opening andclosing said nut, said carriage having Valso mounted thereon a devicefor engaging the strip to be pulled through the retarder machine. saidcarriage being adapted to travel away from the retarder machine and pullthe strip therethrough uponthe proper rmanipulation ofthe manually,operated lever, means being also .employed, if desired, for returningthe carriage .toward the retarder machine, `so that the operation iof'pulling'the strips through the retarder machine and returning thecross-head .or

carriage `to engage a fresh strip, may -be ,car-

' ried on without loss of time or labor.

` To thei above ends, myinvention consists of anovel construction ofstrippullinginachine," whichhlisE capable `of adaptation ,to

Appntatim filed octber 7, isis. serial No. 257,249.'

'the carriage or cross-head 12.

various uses, but particularly for` use with boiler retarder machines ofthe construction aforesaid. l l

I. For the purpose of illustrating my invention, I have shown intheaccompanying Specification of Letters` Patent. Patented Mal'. 9, 1920.

coy

drawings two formsthereof which are at'.

present preferred by me, since the same will give in practicesatisfactory and reliable results. that the various instrumentalities ofwhich my invention consists can be variously arranged and organized andthat my invention It is to be understood, however,

is notjlimited vto the precise' arrangement y and organization of theseinstrumentalities K as herein shown and described.

l igur'e .1 represents a side elevation of a strip pulling machine ordevice embodying my invention.

"corresponding parts.

Referring to the drawings I haveshown herein two embodiments of l thebroad vprinciple of my invention, the

construction seen in Figs. 1 and 2 being A preferably employed, althoughthe construction seen in Figs. 3,4 and 5 willbe found equally eiiicient,if desired. t

In carryingout my invention, I will rst 2, wherein I employ an electricor other motor` 1, on whose shaft 2 is vmounted the pinion v3, whichmeshes with4 the gear 4, which is fast on the feed screw 5.`one end ofthe latter being mounted in suitable bearings 6 inthe uprights 7 and 8,while the'otherv end of lsaid feed screw is mounted in bearings 9 in thetop of the bracket or upright 10. The uprights 8 and 10vr are braced by-a pair of longitudinally extending horizontal guide rods 11, on whichis slidingly mounted As will b e apparent from the carriage orcross-head 12 is mounted on the guide rods 11 at four points, asindicated lthe screw 5 passes and whichprevients `90 describe theconstruction seen in Figs. 1 and Figs. 1 and v2, i'

screw from sagging. 'The carriage 12 is.

provided with transverse ways, as indicated lat 16, within or upon whichthe block or j aw 17 is suitably mounted to :slide transversely, saidblocl; having the rod 18` passing,

the opposite end of said rod has the lower portion kof the manuallyoperated lever 20A pinned thereto and provided with the cam member 21,whichis actuated in unison with said rod 18 and said lever 20.

22 designates a block or jaw located oppositely to the block or jaw 17and carrying the cam member 23, the jaw member 17 carrying the cammember 24. 25 designates a recess inthe jaw 17 juxtaposed to which isthe recess 26 in the jaw 22 'within which recesses is contained thespring 27, as will be understood fromv Fig. 2, the construction being'such that the tension of saidispring normally retains said jaws inseparated position, as indicated in Fig. 2, whereupon the threaded faces28 and 29 thereof, which constitute a split nut, are out of engagementwith the feed screw 5. The

' construction and arrangement of the cam Y with or fixed to the jawmember 22.

Vcani members 21 and 19V are pinned or members Vare preferably such thatthe cam 24 is integralrwith or fixed to the jaw member 17, while the cammember 23 is integral fast Vupon the rod 18, so tliat'when the handle 2Ois partially rotated, the rodi 18 and the cam members 21 and 19 willrotate simultaneously therewith and will cause the threaded portionsVV28` and 29 which constitute a split nut to approach or engage the feedscrew 5, whereupon the entire carriage or crosshead 1.2 composed of thejaws 17 and 22, the guide'member 15, and the swivel 30l carrying thechain 31 and the hook 32, will Y be caused to travel to the right oraway from y the strip twisting mechanism 33, `which latter conforms tothe construction Vshown in my patent aforesaid, wherefrom it will beapparent that the strip 34, shown in dotted Y lines at the `left of Fig.1, will be'diawnor pulled between the pairs of rollers 35 of theretarder machine 33, seen at the left of Fig. 1.

"If desired,1 may provide suitable ball bearings for the swivel 30, asindicated in L (dotted lines at'36.

The Voperation isas follows :es Y Y It will be understood from theforegoing,

' that the motorv1,'its shaft2, pinion 3, gear l4 are Vstationary uponthe guide rods 11.

and -feed screw 5, are constantly rotating, and when' the parts areinthe position seen in Fig. 2, the carriage 12 and its adjuncts llien,however, the handle 2O is manually operated so asto close the threads 28and 29, constituting the.k split nut upon the feed screw' 5, thecarriage will be drawn in a 34 through kthe retarder machine 33.

direction from left to right, pulling the strip y Y When the carriagereachesa point near the upright 8, upon the proper manipulation ofthehandle v20, thel parts again assume thepo .sition seen in Fig. 2, thesplit nut beconr ing Vdisen`. .,'aged from the feed screw and themovement of the carriage ceases.Y The latter may be pulledagain to theleft or toward the lthe vjuxtaposed cam faces 21 and 24 and 23 and 19,lwill besuch that the split nut-at the top of the jaws 17 and 22 willproperly en-l gage the feed screw 5.

inthe construction seen in Figs. 3, 4 and 5, substantiallythe samegeneral principle as already described is employed, there be-l ing twopairs of'uprights 37 and 38, and and V40, upon the two latter of whichapan' of horizontal stationaryguide rods 41 is supported, said uprights39and` 40 supporting the' frontv cross-headV 42, whose extremities 43are guided upon said rods 41, it being apparent that the uprights 37 and38 are tied togetherby the guide rods 44, upon which slides'the rearcross-head 45, whose ends 46 are guided by said rods 44. Y

l47 Vdesignates an electric or other motor' having'the shaft 48 on whichis mounted the pinion 49, whichI meshes with the gear 50,

thelatter being held vfrom lateral or hori-V `Vzoiital movement byreasonof its location between. the uprights 38 and apparent from Figs. 3and 4. l

The gear 50 is mounted on the feed screw 51, whose ends are supported atthe points 52 and 53 in the cross-heads 42 and 45 re'- 39, as will bespectively, said gear 5,0'being feather-keyed to said feed screw 51, aswill be understood from Fig. 5, so that as said gear rotates, the Y feedscrew 51 rwhich is in threaded en a fement with the upright 39, as willbe understood from Fig. 5, will be simultaneously rotated, but will becaused to travel longi-Y tudinally in the desired direction'by reason ofits feather-keyedconnection with the gear 50, whereupon the twocross-heads 42 and 45 Y,

will" travel asa unit in the desired direction. The crosshead 42 isprovided 'with a swivel orturn buckle 30 .to vwhich is attached achain31 and a hook 32, substantially as described inV respect to Fig.42, 33 designating` the boiler retarder machine provided with` rollers35, as already described with respect to Fig. 1, and as shownfin myprio-r patent aforesaid, No. 1,263,896.

art, that the operation of the motor 47 ro? It will be apparent to thoseskilled in the4 Y direct-ion and simultaneously with itk the cross-heads42 and V45 carrying with themV the chain 31 and the hook32, whereby astrip may be pulled and Vtwisted between the'rollv ers 35, as isevident.

The motor47 `may be reversed or stopped at the proper intervals, -by anysuitabledevice commonlyemployed or, if desired, I may employ a suitabledevice'for,` stopping the motor 47 when the hook 32V is at each end ofits stroke by an automatically tripped switch, the solenoid, as 57, tobe electrically connected-to the motor 47, so as to apply a brake, 'as58, by is broken.

o I have deemed describe these features in detail, as their manner o'fapplication will be apparent to those skilled in the art.

It will now be apparent that lll/have devised a novel and-.usefulconstruction ofa strip pullingr device'y for Vmachine for making boilerretarders, which embodies the features of advantage enumeratedasdesirable inthe ystatement of the invention and the abovedescription,and while I have shown anddescribed, in the present instance, preferredembodiments thereof .which will Igive inpractice satisfactoryandi'eliable results, it

is to beund'erstood that the Vsame is susceptible of modification invarious particulars without departingfrom 'the spirit or scope of theinvention or sacrificing any lof its'advantages.

Having thus described f my invention, what` I claim as new and desire tosecure by Letters Patent, is j 1.. In a device ofthe character stated, afeed screw, means for rotating said feed screw, guide rods suitablysupported, a cross head located below saidfeed screw and slidablyinountedon said guide rods, which latter pass through said cross head, ajhook attached thereto, and a split nut comprising threaded jawsnormally open and common' to said feed screw and cross head foreffecting the actuation of the latter. y

2. In" a device of the character stated, the

combination of a motor, a feed screw, 'gear-j ing common to said motorand feed screw, a

i [plurality of uprights, horizontal rods-supported in said uprights, across head slidably mounted on said rods, which lattergpassV through,said cross head, a hook secured to said cross head, and a split nutcomprising j threaded jaws normally open and capable of` being manuallyclosed upon said feed screw for vcausing said feed screw to actu'-ates'aid cross'head and hook to exert a pull on ai strip of materialsecured to said hook.v

3. In a strip pulling `machine, a feedscrew, means for rotating'I saidfeed screw, a cross headslidably supported and. having .ways thereon,jaws transversely movable on gravity, when the circuit it unnecessary toshow o r screw, means for rotating saidA feed screw,v

a Vcross head slidably supported and havin-g ivays thereon, jawstransversely movable 'on'v said ways and having theirupper endsconstructed toiform a split nut, `means for holding said jaws normallylopen and disengaged from` said feed screw. means for manually openingand closing said jaws to cause saidA split nut to engage with and bedisconnected from said feed screw, and means for auto-Vmaticallyreturning said cross head' and jaws.

5. -In a device of the character stated, a

.feed screw,fmeans for rotatingv said feed screw, a cross headslidablysupported and :Y

having-,transverse waystheieon, jaws transversely movable on said waysand having theirupperendsformed into ajsplit nut adaptedto engage said.feed screw, a single spring' for normally holding said jaws apart,

and manually operated means for closing `saidj'aws.;l v y 6. In avdevice of the character stated, a` Vfeed screw, means forrotating-.saidfeed screw, a cross head slidably supported andv l havingwayslthereon, jaws mounted lon said ways and having their yupper endsformed into a split nut adapted to engage said feed screw, recesses vinthe juxtaposed faces of said jaws, a spring in said recesses fornormally holding said jaws apart, a rod passing through said jaws andhaving cam faces thereon, cam faces on said jaws coacting with thecainfaces on said rod, and means for rotating said rod.4

7. Inl a device lof the character stated, ra feed screw, a pair ofuprights through which saidv feed screw passes, a gear on said feed Yscrew between said uprights, a motor, a

also located between said uprights and in mounted in said uprights, across head slidshaftv therefor, a pinion on said motor shaft ablysupported on said rods, which vlatter Y pass through-said cross head, ahook attached to said cross head and means common to said'feed screw andcross head for effecting the ,actuation of theA latter. Y

8. In a device of the character stated, a

kfeed screw, means for rotating said feed screw, Aa cross head slidablysupported below lsaid feed screw, a split nut mountedy on said crosshead, a singlespring intermediate said jaws for holding the members ofsaid nut normally out of engagement With 'aid feed screw, means formanually causing said' nutmembers to engage said feed screw, and'meansforv automatically returning said nutandcross head. n V9. In a deviceofthe vcharacter stated, a

1 feed screw, means for rotating said feed screw, horizontal guide rods,a cross head through which said guide rods pass, asplit nut comprisingthreaded jaws Ycommon to said feed screw and cross headforeffecting theactuation of the latter, and a guide carried by said cross 'head throughwhich said feed screw passes.

' l0. In a device of the character stated, a

feed screw, means for rotating it, guide rods, a cross headinounted onthe latter and lo-` cated below said feed screw, a split nut comprisingthreaded jaws common to said feedV screw and cross head for actuatingthe latter, anda guide carried byrsaid cross head through whichsaid-feed screw passes.

l1. In a device of the character stated, a

feed screw, means for rotating it, guide rods, a cross head mounted onthe latter,jaws on said cross head having their upper ends formed with asplit nut, means for holding said jaws normally apart,y camfaces on thelower portions `of said jaws, a'rod passing through the latter, cams onsaid rod coacting with said camV faces, and ahandle on said rod.

12. In a device of the character stated, y

a feed screw, means for rotating it, guide rods, a cross head mounted onthe latter, jaws on said cross head having their'upper ends formed witha split nut, means for ends formed v with a split nut, means for 4holding said jaws normally apart, cam faces on the lower portionsV ofsaid jaws, a rod passing through the latter, cams on said rod coactingwith said cam faces,'and a handle on said rod,`in -combination withmeans Vfor 5o automatically returning said cross head and jaws. j A Y14. In a device of the character stated, a 4feed screw, means forrotating it, a cross head slidably supportedV andhaving transversewaystherein, jaws mounted on saidV Yways and having their upper endsformed into a splitnut adapted to engage said feed screw, a springintermediate said jaws for normallyholding them apart, fa rod passingthrough said jaws and having cam faces thereon and cam faces 'onsaidjaws coacting with the cam faces on said rod.

Y j Y MoRToNV'o. HUToHjINsoN.

Witnesses: e Y

J. W. 'lWEEKEm Y WM. A. KREUSSER.

